import java.util.*;
public class test {
    public static void main(String[] args) {
        Solution solution=new Solution();
        String [] rets={"aa","ab"};
        System.out.println(solution.longestCommonPrefix(rets));
        System.out.println("aaa");
        int a=Integer.MIN_VALUE;
        int b=Math.max(2,8);
        int [][]arr=new int[][]{{1,2,3},{4,5,6},{7,8,9}};
        solution.spiralOrder(arr);
        System.out.println("aaa");
        String str="hello";
        double arr1 =Math.pow(10,2);
        System.out.println(arr1);
        LCA lca=new LCA();
        lca.getLCA(8,7);
    }
}
